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 The AP62500 is a 5A, synchronous buck converter with a wide input voltage range of 4.5V to 18V. The device fully integrates a 47mΩ high-side power MOSFET and an 18mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP62500 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The AP62500 design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.

The device is available in a V-QFN2030-12 (Type A) package.


  • VIN: 4.5V to 18V
  • Output Voltage (VOUT): 0.6V to 7V
  • 5A Continuous Output Current
  • 6V ± 1% Reference Voltage
  • 195μA Quiescent Current
  • Selectable Switching Frequency
    • 400kHz
    • 800kHz
    • 2MHz
  • Selectable Operation Modes
    • Pulse Frequency Modulation (PFM)
    • Ultrasonic Mode (USM)
    • Pulse Width Modulation (PWM)
  • Programmable Soft-Start Time
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Power-Good Indicator with 5MΩ Internal Pull-Up Resistor
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry
    • Undervoltage Lockout (UVLO)
    • Cycle-by-Cycle Valley Current Limit
    • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • 5V and 12V Distributed Power Bus Supplies
  • Television Sets and Monitors
  • White Goods and Small Home Appliances
  • FPGA, DSP, and ASIC Supplies
  • Home Audio
  • Network Systems
  • Gaming Consoles
  • Consumer Electronics
  • General Purpose Point of Load

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Type Buck
Minimum Input Voltage (V) 4.5
Maximum Input Voltage (V) 18
Output Current (A) 5
Minimum Output Voltage (V) 0.6
Maximum Output Voltage (V) 7
Quiescent Current Typ (µA) 195
Shutdown Current Typ (µA) 1
Frequency Typ (kHz) 400/800/1200
HS RDS(ON) (mΩ) 47
LS RDS(ON) (mΩ) 18
Features Enable, Light Load Efficiency, Ultrasonic Mode, Forced PWM, Power-Good, Frequency Selectable, Soft-start Adjustable, Tracking, UVLO Adjustable, Overcurrent Protection, Thermal Shutdown, Synchronous Rectification

Related Content


Technical Documents

Evaluation Boards and User Guides

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2605 2023-03-09 2023-06-09 Qualified Additional Cu Pillar Bump Site and Bill of Materials (BOM) Lead Frame Material